CN109031793B - Liquid crystal display device having a light shielding layer - Google Patents
Liquid crystal display device having a light shielding layer Download PDFInfo
- Publication number
- CN109031793B CN109031793B CN201811196311.4A CN201811196311A CN109031793B CN 109031793 B CN109031793 B CN 109031793B CN 201811196311 A CN201811196311 A CN 201811196311A CN 109031793 B CN109031793 B CN 109031793B
- Authority
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- China
- Prior art keywords
- transition
- plate
- heat dissipation
- transition piece
- liquid crystal
- Prior art date
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- 239000004973 liquid crystal related substance Substances 0.000 title claims abstract description 29
- 230000007704 transition Effects 0.000 claims abstract description 101
- 230000017525 heat dissipation Effects 0.000 claims abstract description 59
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 4
- 229910052782 aluminium Inorganic materials 0.000 claims description 4
- 238000010438 heat treatment Methods 0.000 claims 4
- 238000000034 method Methods 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 9
- 239000002390 adhesive tape Substances 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 238000010030 laminating Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/1336—Illuminating devices
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/133308—Support structures for LCD panels, e.g. frames or bezels
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/64—Constructional details of receivers, e.g. cabinets or dust covers
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/133308—Support structures for LCD panels, e.g. frames or bezels
- G02F1/133314—Back frames
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/1336—Illuminating devices
- G02F1/133628—Illuminating devices with cooling means
Abstract
The invention discloses a liquid crystal display device, and provides a liquid crystal display device capable of improving heat dissipation of a lamp strip. The liquid crystal display device comprises a back plate, a liquid crystal display panel, a lamp strip, an electric appliance component and a heat radiating device, wherein the liquid crystal display panel comprises a panel main body and a source board, the lamp strip and the panel main body are positioned in front of the back plate, the lamp strip is positioned below the panel main body, and the heat radiating device radiates heat for the lamp strip; the heat dissipation device comprises a front heat dissipation plate, a transition piece and a rear heat dissipation plate, and a transition piece hole is formed in the back plate; the front radiating plate is positioned in front of the backboard, and the rear radiating plate is positioned behind the backboard; the transition piece passes through the transition piece hole and is connected with the front heat dissipation plate and the rear heat dissipation plate; the light bar is connected to the top surface of the front radiating plate; the back of the backboard is sufficient; the form setting of the heat dissipation device is facilitated, and the area is increased, so that the heat dissipation effect of the lamp strip is improved; and the arrangement of electric parts behind the backboard is convenient, the protruding quantity of the lower part of the back of the television is reduced, and the appearance of the television can be improved.
Description
Technical Field
The invention relates to the field of liquid crystal display equipment, in particular to liquid crystal display equipment with a novel heat dissipation structure.
Background
In the conventional liquid crystal display device, in order to make the four frames on the front face look as narrow as possible, the source board of the display panel is turned over to the back face of the whole device. The heat dissipation device is constrained by the space and the wire harness length of the source board, and the section shape cannot conduct heat well, so that the heat dissipation of the LED light bar is poor. The electric parts on the back of the whole machine are either arranged above the source board or are required to be completely staggered with the source board, so that the arrangement is inconvenient, the thickness below the back of the whole machine is larger, and the appearance is influenced.
Disclosure of Invention
The invention aims to solve the technical problems that: a liquid crystal display device capable of improving heat dissipation of a light bar is provided.
The technical scheme adopted for solving the problems is as follows: the liquid crystal display device comprises a back plate, a liquid crystal display panel, a lamp strip, an electric appliance component and a heat radiating device, wherein the liquid crystal display panel comprises a panel main body and a source board, the lamp strip and the panel main body are positioned in front of the back plate, the lamp strip is positioned below the panel main body, and the heat radiating device radiates heat for the lamp strip; the heat dissipation device comprises a front heat dissipation plate, a transition piece and a rear heat dissipation plate, and a transition piece hole is formed in the back plate; the front radiating plate is positioned in front of the backboard, and the rear radiating plate is positioned behind the backboard; the transition piece passes through the transition piece hole and is connected with the front heat dissipation plate and the rear heat dissipation plate; the light bar is connected to the top surface of the front radiating plate; the source board is positioned in front of the front heat dissipation plate.
Further is: the electrical components are located behind the rear heat dissipation plate.
Further is: the electrical components are located in front of the front heat dissipation plate.
Further is: the transition piece comprises a transition strip and a transition block, the transition strip is connected with the back plate, and the transition block penetrates through the transition piece hole; the front heat dissipation plate is provided with a transition bar groove, the transition bar is positioned in the transition bar groove, and the front heat dissipation plate is connected with the transition bar; the rear heat dissipation plate is connected with the transition block.
Further is: the number of the transition piece holes is at least two, the transition piece holes are arranged at intervals along the width direction of the backboard, and the transition blocks are arranged in one-to-one correspondence with the transition piece holes.
Further is: and a heat dissipation gap is arranged between the transition piece hole and the transition block.
Further is: and a heat conduction adhesive tape is arranged between the front heat dissipation plate and the transition piece and between the rear heat dissipation plate and the transition piece.
Further is: the transition strip is connected with the backboard through a fastener, and the transition piece is connected with the front radiating board and the rear radiating board through a fastener.
Further is: the front heat sink, the transition piece and the rear heat sink are all made of aluminum.
The beneficial effects of the invention are as follows: 1. the source board is positioned in front of the front radiating board, so that the space behind the back board is sufficient, and the space in front of the back board is sufficient, but the space of the radiating device is also sufficient due to the sufficient space; the heat dissipation device is beneficial to form arrangement, and the area is large, so that the heat dissipation effect of the lamp strip is improved.
2. The back space is sufficient, the arrangement of electric parts at the back of the back plate is convenient, the protruding amount of the lower part of the back of the television is reduced, the thickness of the lower part of the back of the television is reduced, and the appearance of the television can be improved.
3. Only set up the transition piece hole on the backplate, the backplate need not break off and splice, and backplate simple structure to the outward appearance appears more complete, pleasing to the eye.
Drawings
Fig. 1 is an exploded view of an assembly of a liquid crystal display device;
fig. 2 is a lower cross-sectional view of the liquid crystal display device;
fig. 3 is a partial enlarged view of a liquid crystal display device;
fig. 4 is a rear structure view of the liquid crystal display device;
marked in the figure as: front heat sink 1, transition bar groove 11, transition piece 2, transition bar 21, transition block 22, rear heat sink 3, back plate 4, transition piece hole 41, liquid crystal display panel 5, source board 51, panel body 52, light bar 6, heat dissipation gap 7, electric parts 8, LED driving board 81, main board assembly 82, tcon board 83, sound 84.
Detailed Description
The invention is further described below with reference to the drawings and the detailed description.
As shown in fig. 1 and 2: the liquid crystal display device comprises a back plate 4, a liquid crystal display panel 5, a lamp strip 6, an electric component 8 and a heat radiating device, wherein the liquid crystal display panel 5 comprises a panel main body 52 and a source board 51, the lamp strip 6 and the panel main body 52 are positioned in front of the back plate 4, the lamp strip 6 is positioned below the panel main body 52, and the heat radiating device radiates heat for the lamp strip 6; the heat dissipation device comprises a front heat dissipation plate 1, a transition piece 2 and a rear heat dissipation plate 3, and a transition piece hole 41 is formed in the back plate 4; the front radiating plate 1 is positioned in front of the backboard 4, and the rear radiating plate 3 is positioned behind the backboard 4; the transition piece 2 passes through the transition piece hole 41 and is connected with the front heat dissipation plate 1 and the rear heat dissipation plate 3; the light bar 6 is connected to the top surface of the front radiating plate 1; source plate 52 is located in front of front radiator plate 1.
The electrical component 8 of the invention may be located conventionally behind the rear radiator plate 3. The electrical components 8 are the same as in the prior art and include an LED driver board 81, a main board assembly 82, a Tcon board 83 and a sound box 84.
The electric component 8 of the present invention may be located in front of the front heat dissipation plate 1. So that there are no other parts behind the back plate 4 than the rear radiator plate 3. The back of the liquid crystal display television is almost free of bulges, and the liquid crystal display television can be basically arranged close to a wall during wall hanging. The rear heat dissipation plate 3 is exposed to improve the heat dissipation effect.
The source board 51 is located in front of the front heat dissipation plate 1, so that the space behind the back plate 4 is sufficient, the electric components 8 behind the back plate 4 are convenient to arrange, the protruding amount of the lower portion of the back face of the television is reduced, the thickness of the lower portion of the back face of the television is reduced, and the appearance of the television can be improved. The space behind the backboard 4 is sufficient; although source board 51 is provided in front of back board 4, the space of the radiator is also sufficient because of the original space; the form of the heat dissipation device is facilitated, and the area is increased, so that the heat dissipation effect of the light bar 6 is improved. The heat of the light bar 6 is transferred to the front heat radiating plate 1, then transferred to the rear heat radiating plate 3 through the transition piece 2, and then dissipated into the air.
The specific arrangement of the heat dissipating device, in particular the transition piece 2, can be as shown in fig. 2 and 3: the transition piece 2 comprises a transition strip 21 and a transition block 22, wherein the transition strip 21 is connected with the back plate 4, and the transition block 22 passes through a transition piece hole 41; the front heat dissipation plate 1 is provided with a transition bar groove 11, a transition bar 21 is positioned in the transition bar groove 11, and the front heat dissipation plate 1 is connected with the transition bar 21; the rear heat dissipation plate 3 is connected with the transition block 22.
The transition strip 21 is connected with the backboard 4, and the front radiating plate 1 and the rear radiating plate 3 are connected with the transition piece 2, so that the radiating device is fixed firmly; the transition bar 21 can be long and positioned in the transition bar groove 11, so that the contact area with the front radiating plate 1 is increased, and the heat transfer effect is improved. The transition bar 21 and the transition block 22 may be made in one piece.
In order to increase the contact area between the transition block 22 and the rear heat dissipation plate 3, a plurality of transition piece holes 41 may be provided, each of the transition piece holes 41 is disposed at intervals along the width direction of the back plate, and the transition blocks are disposed in one-to-one correspondence with the transition piece holes 41.
The transition piece 22 may substantially fill the transition piece hole 41, or as shown in FIG. 3, the transition piece hole 41 and the transition piece 22 may have a heat dissipation gap 7 therebetween. Heat may also be directly dissipated from the heat dissipation gap 7.
In order to improve the heat transfer effect, heat conductive adhesive tapes are arranged between the front heat dissipation plate 1 and the transition piece 2 and between the rear heat dissipation plate 3 and the transition piece 2. The light bar 6 may also be adhered to the front heat dissipation plate 1 by a conventional heat conduction adhesive tape to improve the heat transfer effect between the light bar 6 and the front heat dissipation plate 1.
For convenience in connection, the transition strip 21 is connected with the back plate 4 through fasteners, and the transition piece 2 is connected with the front heat dissipation plate 1 and the rear heat dissipation plate 3 through fasteners. The fastener connection structure is simple, connects reliably and can guarantee by the closely laminating of connecting piece, improves the heat transfer effect.
The front radiator plate 1, the transition piece 2, and the rear radiator plate 3 may be made of aluminum. The aluminum material has the advantages of light weight, good heat dissipation effect and lower cost.
For the liquid crystal television to be beautiful, the back plate 4 can be made of glass, and the invention is particularly applicable to the case where the back plate 4 is made of glass.
Claims (2)
1. The liquid crystal display device comprises a back plate (4), a liquid crystal display panel (5), a lamp strip (6), an electric component (8) and a heat dissipation device, wherein the liquid crystal display panel (5) comprises a panel main body (52) and a source board (51), the lamp strip (6) and the panel main body (52) are positioned in front of the back plate (4), the lamp strip (6) is positioned below the panel main body (52), and the heat dissipation device dissipates heat of the lamp strip (6); the method is characterized in that: the heat dissipation device comprises a front heat dissipation plate (1), a transition piece (2) and a rear heat dissipation plate (3), wherein a transition piece hole (41) is formed in the back plate (4); the front radiating plate (1) is positioned in front of the back plate (4), and the rear radiating plate (3) is positioned behind the back plate (4); the transition piece (2) passes through the transition piece hole (41) and is connected with the front radiating plate (1) and the rear radiating plate (3); the light bar (6) is connected to the top surface of the front radiating plate (1); the source plate (51) is positioned in front of the front radiating plate (1);
the transition piece (2) comprises a transition strip (21) and a transition block (22), the transition strip (21) and the transition block (22) are of an integrated structure, the transition strip (21) is connected with the back plate (4), and the transition block (22) penetrates through the transition piece hole (41); the front radiating plate (1) is provided with a transition strip groove (11), a transition strip (21) is positioned in the transition strip groove (11), and the front radiating plate (1) is connected with the transition strip (21); the rear radiating plate (3) is connected with the transition block (22);
the electric component (8) is positioned behind the rear radiating plate (3) or the electric component (8) is positioned in front of the front radiating plate (1); the quantity in transition piece hole (41) is two at least, and each transition piece hole (41) is set up along backplate (4) width direction interval, transition piece hole (41) one-to-one sets up with transition piece hole (41), has heat dissipation clearance (7) between transition piece hole (41) and transition piece (22), is provided with the heat conduction sticky tape between preceding heating panel (1) and transition piece (2) and between back heating panel (3) and transition piece (2), and transition strip (21) are connected through the fastener with backplate (4), and transition piece (2) are connected through the fastener with preceding heating panel (1) and back heating panel (3).
2. The liquid crystal display device according to claim 1, wherein: the front radiating plate (1), the transition piece (2) and the rear radiating plate (3) are all made of aluminum.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811196311.4A CN109031793B (en) | 2018-10-15 | 2018-10-15 | Liquid crystal display device having a light shielding layer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811196311.4A CN109031793B (en) | 2018-10-15 | 2018-10-15 | Liquid crystal display device having a light shielding layer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109031793A CN109031793A (en) | 2018-12-18 |
| CN109031793B true CN109031793B (en) | 2024-02-06 |
Family
ID=64613024
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811196311.4A Active CN109031793B (en) | 2018-10-15 | 2018-10-15 | Liquid crystal display device having a light shielding layer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109031793B (en) |
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| CN109031793A (en) | 2018-12-18 |
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